Year | Value | 2022 | 56,777 | 2021 | 56,233 | 2020 | 55,694 | 2019 | 55,307 | 2018 | 55,063 | 2017 | 54,800 | 2016 | 54,538 | 2015 | 54,295 | 2014 | 54,067 | 2013 | 53,855 | 2012 | 53,664 | 2011 | 53,489 | 2010 | 53,341 | 2009 | 53,474 | 2008 | 53,877 | 2007 | 54,279 | 2006 | 54,645 | 2005 | 54,944 | 2004 | 55,191 | 2003 | 55,384 | 2002 | 55,496 | 2001 | 55,503 | 2000 | 55,399 | 1999 | 55,261 | 1998 | 55,072 | 1997 | 54,809 | 1996 | 54,529 | 1995 | 54,206 | 1994 | 53,436 | 1993 | 52,112 | 1992 | 50,670 | 1991 | 49,510 | 1990 | 48,615 | 1989 | 47,727 | 1988 | 46,838 | 1987 | 45,781 | 1986 | 44,569 | 1985 | 43,367 | 1984 | 42,166 | 1983 | 40,983 | 1982 | 39,825 | 1981 | 38,690 | 1980 | 37,583 | 1979 | 36,499 | 1978 | 35,438 | 1977 | 34,504 | 1976 | 33,699 | 1975 | 32,925 | 1974 | 32,127 | 1973 | 31,305 | 1972 | 30,506 | 1971 | 29,722 | 1970 | 28,890 | 1969 | 28,023 | 1968 | 27,194 | 1967 | 26,398 | 1966 | 25,608 | 1965 | 24,824 | 1964 | 24,070 | 1963 | 23,339 | 1962 | 22,574 | 1961 | 21,778 | 1960 | 21,009 |
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